Available Sulphur Status in Soybean Growing Areas of Northern Telangana Zone
G. Venugopal *
Agricultural Research Station, Madhira, India.
S. Harish Kumar Sharma
Department of Soil Science and Agricultural Chemistry, PJTSAU, Rajendranagar, Hyderabad, India.
Abdul Aziz Qureshi
Indian Institute of Oilseeds Research Station, Rajendranagar, Hyderabad, India.
G. E. Ch. Vidya Sagar
Department of Agronomy, PJTSAU, Rajendranagar, Hyderabad, India.
*Author to whom correspondence should be addressed.
Abstract
The black soils of Adilabad and Nizamabad districts of Northern Telangana zone most prominent for the cultivation of soybean. From this region of soils, sixty soil samples were collected and analysed for available sulphur and its fractions. The results indicated that available sulphur content ranged from 5.9 mg kg-1 to 52.6 mg kg-1 with a mean of 13.8 mg kg-1. The available sulphur content was low to medium in status. The extent of sulphur deficiency of soybean growing areas of Adilabad and Nizamabad are 50 and 43.4 per cent respectively. The water-soluble sulphur ranged from 5.4 mg kg-1 in rural samples of Nizamabad to 7.3 mg kg-1 in sonala soils of Adilabad district. Whereas KH2PO4 and Heat soluble sulphur content ranged from 19.2, 29.6 mg kg-1 in Armoor village to 28.7, 37.3 mg kg-1 in Sonala village respectively. The highest total sulphur content was recorded in soils of Adilabad district.
Keywords: Available sulphur, sulphur fractions, water soluble sulphur, KH2PO4 and heat soluble sulphur, total sulphur